Top definition
The Army Combat Uniform. Is the new uniform that the U.S. Army has adopted to replace the current Battle Dress Uniform.
That Soldier was just issued some new ACUs.
by butthorn October 29, 2005
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2
(A-cus)

The annoying person who won't stop talking when they are told to or keep going on will you watch Netflix or YouTube
I was watching Game of Thrones and my acus friend wouldn't stop taking.
by CRAZYCLOCKLADY February 07, 2018
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